EVAP System Pressure Sensor/Switch C Circuit High
The EVAP pressure sensor/switch C reports a circuit high condition. Tank pressure plausibility for leak detection on this branch is impaired.
Affected components
- Evap pressure sensor c
- Wiring harness
- Ecm
Common causes
- High likelihood: Signal wire shorted to B+
- Medium likelihood: Open pressure sensor
- Low likelihood: Connector pins corroded - high contact resistance
Possible symptoms
- Check engine light on
- Possible smell of fuel near tank or engine bay
- Failed emissions inspection
- Loose-cap warning may appear
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
- A drive cycle may be required after repair
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.